Jordan l



1. L. MOTT.

Cer Wheel.

Patented Mar. 2l, 1854.

UNITED sTATEs PATENT oEEioE JORDAN L. MOTT, OF NEW YORK, N: Y.

RAILROAD-CAR, WHEEL,

Specification of Letters Patent No. 10,672, dated March 2,1, 1854.

T 0 all whom, t may concern .i

Be it known that I, JORDAN L. MOTT, of

New York city, New York, have invented a new and useful Improvement in Railroad- Wheels, reference being had tok the accompanying drawings, making part of this specification, in which- The same letters indicate like parts in allv the figures.

As railroad wheels have heretofore been made and mounted on their axles, the semidiameter is much greater than the length of the hub, so that when the flanch strikes against the rail in the lateral thrust of railroad `trains the tendency ofthe force to break or bend the wheels and axles is much increased by reason of this leverage of the semi-diameter of the wheels over the length of the hubs. And again; it is desirable that the two wheels on an axle, be free to turn independently of each other that they may adapt themselves to the difference in length between the inner and outer rails or curves. Many attempts have'been made to accomplish this, but so far as I am informed without success. If the axle be made in two parts and coupled in the middle, the connection cannot be made practically efficient to resist the lateral thrusts and jars to which railroad trains are exposed; and if one wheel be permanently secured on one end of the axle, and the other free to turn on the other end, the length of the hub is not sufficient to resist the thrusts, aided by the leverage of the semi-diameter of the wheel.

The object of my invention it so to construct railroad wheels as t'o avoid the difficulties above enumerated, and to meet these contingencies, the nature of the yfirst part of my invention consists in .making railroad wheels with the outer face of any suitable form, and with the central hub fitted to the axle, in combination with the making ofthe inner plate of a conical or nearly conical form, and with the extremity thereof tted tothe axle toward the middle of its length.A The outer plate gives the required vertical support while the inner conical plate braces. it against all' lateral thrusts, thus presenting greater Strengthy with a given weight of metal than .by any other mode ofl construe-j` y tion heretofore practised. VThe rim of the Wheel having its support on the axle toward the middle of its length, by the bracing actionof the inner conical plate will be better f supported to resist lateral thrusts, and this p oint of support being removed to a greater distance from the plane lof the anch, will reduce, if not entirely avoid the breaking or" bending of the axle, While at the same time one'4 or both thewheels can be fitted to the y axle so as to turn independently to run on curves, the two points of support of each wheel onv the axle being so far apartas] c, or spokes orother equivalents therefor,

and connecting the `hub `'with the rim d; and an inner plate e, ,of a conical or nearly flanch side of the wheel to the shaft' to which it is fitted veither to be secured or to turn thereon. If desired, and tofacilitate 11 the casting of such wheels I make the outer :plate slightly curvedvv from the hub to the Y rim, as also the inner or conical plate'. The inside is cast on a core of the required form, supported in theusual or any suitable manner; and, if desired the securing nut f, previously made of wrought iron and tapped,

is inserted in the sand core by which it is n protected from the molten iron in the proc-nj #j essl of casting, so that after casting itpcan be M i liberated from the sand. Or instead of this,

the'nut can be introduced through holes inV the outer plate. The axle may be made of greater diameter between the two Wheels, or with collars, leaving two shoulders' for the inner end v,of

and at the requireddistance from the shoulders the axle is tapped to receive the nuts.

When the axle is inserted in the Wheel the" so .j conical form extending from the inner or the cones of the two wheels to rest against,

nuts are slipped thereon and then screwed up against the inner face of what may be termed the hub of the conical plate. Or in-` stead of the securing nut, a Washer can be substituted and secured to the axle by a key or screw inserted through the hole g, in the conical plate. be lsecured on the axle so asnot to turn thereon; or one may be so secured and the other held in its place on the axle and be left free to turn 0n the axle, so that in turning curves one Wheel may turn independently of the other,` or bothmay be secured on the axle so as to turn thereon.

I do not claim themaking of hollow rail road wheels, that is Wheels with two plates connectingthe hub and rim, nor making In this way both wheels can Vof the axle, all substantially as specified.

JORDAN L. MOTT.

Witnesses: i

WM. H. BISHOP, CHAs. W. BAMBURGH. 

